Work support



March 8, 1949. J. E. BEST 2,463,592

WORK SUPPORT Filed March 19, 1947 2 Sheets-Sheet l IN VEN TOR. James E. Besf BY (2 LQM Aff'y Patented Mar. 8, 1949 U NIT ED STATES 2,463,592

WORK SUPPORT J amesE. Best, San Franciscmcalifs Application March 19, 1947,'Seria1 No. 735,662

(Cl. fil r-224*) 1 Claim.

This invention relates-to improvements inwork supports and has particular reference to a holder for effectively positioning the bit of a tool so that the same may be properly sharpened on. a revolving grindstone.

The principal object of this invention is to produce a holder which may be adjusted to accommodate for tools of different lengths, widths and thicknesses and a tool which may be adjusted parallel to the face of the grinder; also a tool which may be tipped to produce the proper cutting angle.

A further object is to produce a device of this character which is readily transportable and one which may be positioned adjacent any grinder.

A still further object is to produce a device of this character which is economical to manufacture, easy to use and one which may be adjusted without the use of other tools.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a front elevation of my tool holder.

Fig. 2 is a top plan view of Fig. 1.

Fig. 3 is an end elevation of Fig. 2, looking from the right of the drawing, and

Fig. 4 is an enlarged cross sectional view taken on the line 4--4 of Fig. 2 and showing the bit in engagement with the grinding wheel.

In the sharpening of tools, particularly the bit of a plane, it has been customary for the person doing the sharpening to hold the blade or bit in the hand and to move it back and forth over a grindstone, or oil stone, until the edge of the bit has been abraded a sufficient amount to present a sharpened edge.

This method of sharpening depends largely upon the skill of the operator and at best is far from accurate as to obtaining the best angle or an even cut across the width of the blade, the result being that when the blade is placed in the plane one corner of the blade may contact the work before the other side of the blade engages the work and consequently the blade may cause a gouging.

I have therefore devised a holder wherein the blade is securely mounted in such a manner that it may be advanced toward the cutting wheel, may be locked thereagainst and may be slid sideways so that the entire contacting edge of the tool may be brought into engagement with the wheel as the same is revolving.

I have also provided means whereby this holder maybe swungzupon a pivot so-thatthe same is parallel with: the face; of the grindemiina'smuchzas it treqnen-tly happens,that a:1grindirigzwlreel:..bee comes worn, particularly on one side, so that the cutting face thereof is not parallel with its axis.

In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a base, which base may be positioned upon any suitable support adjacent the grinding wheel, a portion of which is shown at 6 in Fig. 4..

Formed on the base is a boss I in which is vertically positioned a rotatable post 8, which in turn supports one end of a stationary shaft 9.

The opposite end of the shaft is secured in a post H, which has a flat base l2, slidable on the base 5. The base l2 carries a pin [3, which may enter spaced openings l 4 formed in the base 5 and arranged on an are from the pivotal axis of the post 8.

Slidable on the shaft 9 is a bushing l6 which has a plate I! secured thereto through the medium of a collar l8, which collar is secured to the bushing I 6 by a screw IS.

A similar plate 2| is secured to a collar 22 and is slidable upon the bushing IE, but held in alignment with the plate I! through the medium of a pin 23 having sliding engagement with the plate II, the purpose of which will be later seen.

One end of the bushing I6 is threaded, as shown at 24, so that a nut 26 may be used to force the two plates l1 and 2| toward each other. Each of the plates carries a slider 21, which slider has an in-turned end 28 adapted to overlie the tool bit 29. (See Figs. 1 and 4.)

A threaded member 35 serves to push the slider into intimate engagement with the bit.

The result of this construction is that when the parts are arranged as shown in Fig. 1, the threaded members 3| are loosened so that the sliders 21 may be moved away from the bushing 22, after which a bit may be inserted so as to lie against the bushing and to underlie in-turned ends 28, after which the threaded members 3| are partially tightened.

The bit is then advanced until it is in the proximate position for grinding, as shown in Fig. 4, and at the proper angle, which is accomplished by rotating the bushing I 6 upon the shaft 9, and thereby any angular cut may be secured. The nut 26 is now tightened so that the plates l1 and 2| tightly abut the sides of the tool.

The threaded members 3| are now tightened 3 and the shaft 9 is arranged parallel to the face of the cutting wheel 6 through the adjustment of the pin l3 and the opening l4.

By now moving the bushing, together with its plates, which forms the tool holding portion as a whole, from right to left on the shaft 9, the entire surface of the cutting portion of the bit may be effectively ground by the cutter.

It will thus be seen that by inserting a tool in my holder and securing the same in proper adjusted position that the tool may be quickly and accurately sharpened.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subl'oined claim.

Having thus described my invention, I claim:

A work support comprising a base, a pair of parallel posts vertically supported on said base,

one of said posts being rotatable on said base, the other of said posts being slidable on said base about the axis of said rotatable post, means for positioning said slidable post in definite positions, a horizontal shaft extending between said posts, a tool holder slidably positioned on said shaft, said holder comprising a pair of spaced plates movable toward and away from each other, tool engaging sliders mounted on said plates and means for holding said sliders in contact with a tool positioned between said plates.

JAMES E. BEST.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 904,817 Stutzman Nov. 24, 1908 1,279,025 Shay Sept. 16, 191-8 2,008,943 Bodey July 23, 1935 2,107,921 Weed Feb. 8, 1938 

